<template>
  <div id="app">

    <router-view v-if="isRouterAlive"></router-view>
  </div>
</template>
<script>
export default {
  components: {
  },
  provide(){
    return {
      reload: this.reload
    };
  },
  data() {
    return {
      isRouterAlive: true
    };
  },
  created() {
    //在页面加载时读取sessionStorage里的状态信息
    if (localStorage.getItem("store") ) {
      this.$store.replaceState(Object.assign({}, this.$store.state,JSON.parse(localStorage.getItem("store"))))
    }
    //在页面刷新时将vuex里的信息保存到sessionStorage里,解决刷新页面时账户信息丢失的问题
    window.addEventListener("beforeunload",()=>{
      localStorage.setItem("store",JSON.stringify(this.$store.state))
    })
  },

  methods: {
    reload(){
      this.isRouterAlive = false;
      this.$nextTick(function () {
        this.isRouterAlive = true;
      })
    }
  },
  mounted() {
  },
};
</script>
<style>
#app{
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #fff;
}
</style>


